A myxoid (MIX-oid), or digital mucous cyst, is a benign bump that can occur on the top of the finger between the nail and last joint. Nobody knows exactly why it arises. It appears as a smooth, shiny, ...

Mucous cysts are pseudocysts (cystic structures lacking a true lining) that usually appear on the middle or index finger of the dominant hand; toe involvement is uncommon. Although most mucous cysts ...